Allow applying an OTA package manually from cache.

Change-Id: I8f78377555c658a992ca95cadf11b67ddc93fed8
diff --git a/default_recovery_ui.c b/default_recovery_ui.c
index 7c4017e..d56164e 100644
--- a/default_recovery_ui.c
+++ b/default_recovery_ui.c
@@ -27,6 +27,7 @@
                        "apply update from external storage",
                        "wipe data/factory reset",
                        "wipe cache partition",
+                       "apply update from cache",
                        NULL };
 
 void device_ui_init(UIParameters* ui_parameters) {